EP 4054294 A4 20231122 - LIGHTING FIXTURE AND DIMMING CONTROL SYSTEM
Title (en)
LIGHTING FIXTURE AND DIMMING CONTROL SYSTEM
Title (de)
LEUCHTE UND DIMMSTEUERUNGSSYSTEM
Title (fr)
APPAREIL D'ÉCLAIRAGE ET SYSTÈME DE COMMANDE DE GRADATION
Publication
Application
Priority
- JP 2019197339 A 20191030
- JP 2020081805 A 20200507
- JP 2020040676 W 20201029
Abstract (en)
[origin: US2021136891A1] A lighting device including a first light emitting device that emits light of first chromaticity coordinates and has a high melanopic ratio, a second light emitting device that emits light of second chromaticity coordinates, and a third light emitting device that emits light of third chromaticity coordinates and has a low melanopic ratio, wherein light in a range from a first temperature to a second temperature on the black body radiation locus is included in a triangular area surrounded by a straight line connecting the first chromaticity coordinates and the second chromaticity coordinates, a straight line connecting the second chromaticity coordinates and the third chromaticity coordinates, and a straight line connecting the third chromaticity coordinates and the first chromaticity coordinates, in the chromaticity diagram of the CIE1931 color system.
IPC 8 full level
H01L 25/075 (2006.01); F21V 9/32 (2018.01); H01L 33/50 (2010.01); H05B 47/105 (2020.01); F21Y 115/10 (2016.01)
CPC (source: CN EP US)
H01L 25/0753 (2013.01 - EP); H01L 33/502 (2013.01 - US); H05B 45/28 (2020.01 - CN US); H01L 33/502 (2013.01 - EP); H05B 45/20 (2020.01 - EP); Y02B 20/40 (2013.01 - EP)
Citation (search report)
- [X] WO 2019140306 A1 20190718 - ECOSENSE LIGHTING INC [US]
- [X] WO 2019139636 A1 20190718 - ECOSENSE LIGHTING INC [US]
- [X] US 2018368218 A1 20181220 - PETLURI RAGHURAM L V [US], et al
- See also references of WO 2021085546A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
US 2021136891 A1 20210506; CN 114557129 A 20220527; EP 4054294 A1 20220907; EP 4054294 A4 20231122; JP 7510068 B2 20240703; JP WO2021085546 A1 20210506; WO 2021085546 A1 20210506
DOCDB simple family (application)
US 202017086278 A 20201030; CN 202080073589 A 20201029; EP 20882168 A 20201029; JP 2020040676 W 20201029; JP 2021553688 A 20201029